Create Add_Two_Numbers.py

Author: Ram-95

Linked_Lists/Add_Two_Numbers.py

@@ -0,0 +1,19 @@
+# Solution - 1: O(N + M) Time and O(1) Space 
+class Solution:
+    def addTwoNumbers(self, l1: Optional[ListNode], l2: Optional[ListNode]) -> Optional[ListNode]:
+        carry = 0
+        dummy = ListNode(0)
+        t_head = dummy
+        while l1 or l2 or carry:
+            if l1:
+                carry += l1.val
+                l1 = l1.next
+            if l2:
+                carry += l2.val
+                l2 = l2.next
+            t_head.next = ListNode(carry % 10)
+            carry = carry//10
+            t_head = t_head.next
+        
+        return dummy.next
+